|
freepatentsonline.com |
3,407,796 |
ieeexplore.ieee.org |
2,475,773 |
patentstorm.us |
2,074,268 |
process-equipment.globalspec.com |
63,532 |
google.com |
10,298,059 |
broomfieldusa.com |
192 |
thomasnet.com |
319,498 |
directindustry.com |
147,483 |
artmam.net |
746,244 |
armaturecoil.com |
188 |
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